ABSTRACT
A 9-year-old, female potbellied pig showed loss of appetite and abdominal distension. After clinical examination and ultrasonography, a tumour was suspected. At laparotomy a large mass was present in the genital tract. Because the mass could not be excised, the pig was euthanized. Pathological examination revealed leiomyoma of the cervix and uterus wall in addition to multifocal adenocarcinomas of the uterus.
Subject(s)
Genital Neoplasms, Female/veterinary , Leiomyoma/veterinary , Swine Diseases/pathology , Adenocarcinoma/pathology , Adenocarcinoma/veterinary , Animals , Euthanasia, Animal , Female , Genital Neoplasms, Female/pathology , Immunohistochemistry/veterinary , Leiomyoma/pathology , Swine , Uterine Cervical Neoplasms/pathology , Uterine Cervical Neoplasms/veterinary , Uterine Neoplasms/pathology , Uterine Neoplasms/veterinaryABSTRACT
A cat was referred for investigation of a soft tissue mass caudal to the left mandible. Initial investigations suggested a malignant salivary gland tumour, and the mass was removed by extracapsular resection of the mandibular gland. Histopathology showed an oncocytoma within the salivary gland. An oncocytoma is a neoplastic transformation of oncocytes. Oncocytes are cells with a small nucleus and intense eosinophilic granular cytoplasm due to numerous mitochondria, which proliferate during ageing in exocrine and endocrine glandular tissues. Physiological proliferation occurs next to oncocytosis, oncocytoma, and oncocytic carcinoma. This is the first report of an oncocytoma in a feline mandibular salivary gland, and the first report of long-term survival after surgical removal.
